Diversity of Porifera in the Mediterranean coralligenous accretions, with description of a new species
Author
Bertolino, Marco
Author
Cerrano, Carlo
Author
Bavestrello, Giorgio
Author
Carella, Mirco
Author
Pansini, Maurizio
Author
Calcinai, Barbara
text
ZooKeys
2013
336
1
37
http://dx.doi.org/10.3897/zookeys.336.5139
journal article
http://dx.doi.org/10.3897/zookeys.336.5139
1313-2970-336-1
Paratimea oxeata Pulitzer-Finali, 1978
Figs 5
A-D
Paratimea oxeata
Pulitzer-Finali, 1978: 39.
Material examined.
Specimen SSS-BL1-F3A-spH; alcohol and dry state; Santo Stefano Shoals (station 1),
43°49'N
,
7°54'E
, depth 35 m, collected 14-02-2008. The specimen was entirely used for spicule preparations.
Description
.
Very small (0.5 cm2) insinuating sponge (Fig. 5A) detected inside a cavity of a slice of a coralligenous block. Grey coloured in dry state.
Skeleton. Not observed.
Spicules. Macroscleres: oxeas in two size categories: I) large oxeas curved, bent or flexuous, with hastate tips (Fig. 5B), 810 (961.25) 1200
x
15 (18) 25
μm
; II) small
oxeas
curved or flexuous (Fig. 5C), 300 (546.6) 700
x
2.5 (4.75) 5
μm
. Microscleres: oxyasters with more or less marked centrum with 9-12 conical rays, 25 (41.5) 60
μm
in diameter. In some cases the number of rays is reduced (Fig. 5D).
Figure 5.
Paratimea oxeata
. A Specimen in the coralligenous accretions (arrows) B Large oxeas C Small oxeas D Oxyasters.
Distribution
and discussion.
The species wasdescribed from Naples (
Pulitzer-Finali 1978
) where it occurred on rocky bottoms at 60-100 meter depth. This is a new record for the coralligenous assemblage and for the Ligurian Sea and it is probably endemic for the Mediterranean Sea (
Pansini and Longo 2008
). This is its first finding after the original description.